Electrical installation 89
AI1 or AI2 as a Pt100 or KTY84 sensor input
Three Pt100 sensors or one KTY84 sensor for motor temperature measurement can
be connected between an analog input and output as shown below. (Alternatively,
you can connect the KTY to FEN-11 analog /I/O extension module or FEN-xx encoder
interface module.) Do not connect both ends of the cable shields directly to ground. If
a capacitor cannot be used at one end, leave that end of the shield unconnected.
WARNING! As the inputs pictured above are not insulated according to
IEC 60664, the connection of the motor temperature sensor requires double
or reinforced insulation between motor live parts and the sensor. If the
assembly does not fulfill the requirement, the I/O board terminals must be protected
against contact and must not be connected to other equipment or the temperature
sensor must be isolated from the I/O terminals.
DIIL input
The DIIL input can used for the connection of safety circuits. By default, the input is
parametrized to stop the unit when the input signal is lost.
1)
For AI1, set input type to voltage with switch/jumper J1 (ZCU) or switch AI1 (BCU). For AI2, set input
type with J2 (ZCU) or AI2 (BCU). Set the appropriate analog input unit to V (volt) in parameter group 12
Standard AI.
2)
Select the excitation mode in parameter group 13 Standard AO.
1…3 × Pt100 or 1 × KTY84
3.3 nF
>
630 V AC
XAI
XAO
AIn+
AIn-
AOn
AGND
T
TT
1)
2)
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